/Engine/Plugins/Runtime/ReplicationGraph/Source/Public/ReplicationGraph.h
Returns connection graph nodes. This is const so that you do not mutate the array itself. You should use AddConnectionGraphNode/RemoveConnectionGraphNode.
const [TArray](API\Runtime\Core\Containers\TArray)< [UReplicationGraphNode](API\Plugins\ReplicationGraph\UReplicationGraphNode) * > & GetConnectionGraphNodes() const